if and of the classes are a superclass of JSONRectangularTilesheet, returns same as getContent(urlc) Otherwise, returns null.
if and of the classes are a superclass of JSONRectangularTilesheet, returns same as getContent(urlc) Otherwise, returns null.
Reads data from a URLConnection's input stream and puts that data into a string.
Reads data from a URLConnection's input stream and puts that data into a string.
A contentHandler that will compose a map from a JSON and linked documents